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Search: id:A147342
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| A147342 |
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Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 0100-0100-1111-0010-0010 pattern in any orientation. |
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+0
1
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| 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 7, 13, 21, 31, 71
(list; graph; listen)
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OFFSET
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1,10
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EXAMPLE
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Maximal 10 X 10 example
.0.0.0.0.0.1.0.0.0.0
.0.0.0.0.0.1.1.1.0.0
.0.0.0.1.1.1.0.0.1.0
.0.0.1.0.0.1.0.0.1.0
.0.0.1.0.0.0.1.1.1.1
.1.1.1.1.0.0.0.1.0.0
.0.1.0.0.1.0.0.1.0.0
.0.1.0.0.1.1.1.0.0.0
.0.0.1.1.1.0.0.0.0.0
.0.0.0.0.1.0.0.0.0.0
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CROSSREFS
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Sequence in context: A098577 A004136 A147409 this_sequence A060939 A098575 A138035
Adjacent sequences: A147339 A147340 A147341 this_sequence A147343 A147344 A147345
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KEYWORD
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nonn
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AUTHOR
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Ron Hardin (rhhardin(AT)att.net)
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